Three easy to use C++ progress bar classes: ezProgressBar, ezETAProgressBar and ezRateProgressBar. ezProgressBar prints only a single line without carriage returns, so it's ideal for programs that redirect output to a file. It uses a single header file and only depends on the standard iostream. ezETAProgressBar is a more traditional growing progress bar that reports a percentage and a time-remaining estimate. ezRateProgressBar reports percentage complete, the time that has elapsed and estimated remainder, plus how many tasks have been done and remain and the rate of tasks per second; tasks can be a custom unit.